using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace WindowsFormsApplication4
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
ushort P1;
if (ushort.TryParse(textBox1.Text, out P1))
{
MessageBox.Show((P1 % 4 == 0 && P1 % 100 != 0) || P1 % 400 == 0 ? "输入的是闰年!" : "输入的不是闰年!", "提示!");
}
else
{
MessageBox.Show("请输入正确的数值!", "提示!");
}
}
}
}这是自己写的,using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace GetYear
{
public partial class Frm_Main : Form
{
public Frm_Main()
{
InitializeComponent();
}
private void btn_GetMessage_Click(object sender, EventArgs e)
{
ushort P_usint_temp;//定义局部变量
if (ushort.TryParse(//将输入字符串转换为数值
txt_year.Text, out P_usint_temp))
{
MessageBox.Show(//输出计算结果
(P_usint_temp % 4 == 0 && P_usint_temp % 100 != 0)//判断是否为闰年
|| P_usint_temp % 400 == 0 ? "输入的是闰年!" : "输入的不是闰年!",
"提示!");
}
else
{
MessageBox.Show(//提示输入数值不正确
"请输入正确数值!", "提示!");
}
}
}